命题“对任意的x∈R，x3﹣x2+1≤1”的否定是（ ）
x∈R，x3﹣x2+1＞1
A firm is choosing among three short-term investment securities: Security 1 - A 30 - day U. S. Treasury bill with a discount yield of 3.6%. Security 2 - A 30 - day banker’s acceptance selling at 99.65% of face value. Security 3 - A 30 - day time deposit with a bond equivalent yield of 3.65%. Based only on these securities’ yields, the firm would:（）
A. prefer the banker’s acceptance.
B. prefer the time deposit.
C. prefer the U. S. Treasury bill.
董仲舒认为：“帝王之将兴也，其美祥亦先见；其将亡也，妖孽亦先见。”这一命题观点属于( )。
A．唯物论
B．唯心主义非决定论
C．辩证法
D．唯心主义命定论
x∈R，x3﹣x2+1＞1
x∈R，x3﹣x2+1＞1